Âderna Fìzika ta Energetika (Mar 2007)

Angular correllations and decay branching ratio for excited state of 7Li*(7.45 MeV) in reactions 7Li(α, α)7Li*

  • O. F. Nemets,
  • Yu. N. Pavlenko,
  • V. L. Shablov,
  • F. I. Karmanov,
  • V. O. Kyva,
  • V. N. Dobrikov,
  • O. K. Gorpinich,
  • I. N. Kolomiets,
  • B. A. Rudenko,
  • Yu. Y. Karlyshev,
  • A. P. Voiter,
  • I. A. Mazny,
  • S. E. Omelchuk,
  • Yu. S. Roznuk

Journal volume & issue
Vol. 8, no. 1(19)
pp. 36 – 44

Abstract

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Measurements of differential cross-sections of α-particle inelastic scattering by 7 Li nuclei and 7 Li(α, α6 Li)n, 7 Li(α, αα)t reactions have been performed at the energy Eα = 27,2 MeV. Probability of 7 Li*(7,45 MeV) decay into 6 Li + n channel has been determined from the ratio of cross-sections measured in kinematically complete and incomplete experiments. The large discrepancy of this value (P = 0,49 ± 0,06) and of those obtained at the study of 7 Li*(7,45 MeV) decay in binary reactions can be explained by the influence of Coulomb field of accompanied αparticle on the decay of near-threshold resonances in three-particle reactions.